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Katarina Posted 20 years ago
Grammar

whether or if

What's the difference between these two sentences:

1. He doesn't know whether Mary will leave.
2. He doesn't know if Mary will leave.

Can we use in such sentence constructions either of the two words (whether and if) ending up with the same meaning?
  

Top answer

In that context you can use "whether" or "if". They both mean the same thing. CJ

— CalifJim

  • In that context you can use "whether" or "if".
  • They both mean the same thing.
  • CJ
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3 Answers
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In that context you can use "whether" or "if". They both mean the same thing.

CJ
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CalifJimIn that context you can use "whether" or "if". They both mean the same thing.

CJ


Thanks.
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0"Whether" is always used with at least two choices or conditions and always uses the word "or."02br
02br
00In sentence 1, you would need to put the other alternative(s) in the sentence.02br
02br
00"If" is used without "or" and represents something that is either true or false. Although it is very common to say "if (such and such) or not," it is not the co
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